DANBURY TOWNSHIP – Officials have not determined what caused a fire that destroyed a storage unit building Friday, but they have ruled out arson, the fire chief said.

The blaze in the center building at Lakeside-Marblehead Storage burned through 43 units for more than two hours, and fire departments from across Ottawa County were called in to help extinguish it.

"There's nothing that any of our investigation team found as suspicious," Danbury Township Fire Chief Doug Waugh said.

The fire department is waiting for the Ohio State Fire Marshal's final report on the case, Waugh said. The fire marshal's office confirmed it has not determined the cause and does not have a timeline for when it might complete its investigation, said Lindsey Burnworth, fire marshal's spokeswoman.

There is no damage estimate for the building, located 9980 East Harbor Road, just outside the Marblehead village limits, Waugh said. Although the other buildings at the facility were not affected, contents in the storage units might have some smoke damage, he said.

A Danbury Township firefighter suffered minor injuries while fighting the fire in the morning and was treated and released at Magruder Hospital. He returned to the scene in the afternoon to continue helping douse the blaze.